Parking Brake Shoe: Service and Repair

REMOVAL
1. Raise and support the vehicle.
2. Remove the tire and wheel assembly.





3. Remove the disc brake caliper.
4. Remove the disc brake rotor.

Brake Shoe:

5. Disassemble the rear park brake shoes.

CLEANING - REAR DRUM IN HAT BRAKE
Clean the individual brake components, including the support plate exterior, with a water dampened cloth or with brake cleaner. Do not use any other cleaning agents. Remove light rust and scale from the brake shoe contact pads on the support plate with fine sandpaper.

INSPECTION - REAR DRUM IN HAT BRAKE
As a general rule, riveted brake shoes should be replaced when worn to within 0.78 mm (1/32 in.) of the rivet heads. Bonded lining should be replaced when worn to a thickness of 1.6 mm (1/16 in.).

Brake Shoe:

Examine the lining contact pattern to determine if the shoes are bent or the drum is tapered. The lining should exhibit contact across its entire width. Shoes exhibiting contact only on one side should be replaced and the drum checked for runout or taper.

Inspect the adjuster screw assembly. Replace the assembly if the star wheel or threads are damaged, or the components are severely rusted or corroded.

Discard the brake springs and retainer components if worn, distorted or collapsed. Also replace the springs if a brake drag condition had occurred. Overheating will distort and weaken the springs.

Inspect the brake shoe contact pads on the support plate, replace the support plate if any of the pads are worn or rusted through. Also replace the plate if it is bent or distorted .

INSTALLATION

NOTE: On a new vehicle or after parking brake lining replacement, it is recommended that the parking brake system be conditioned prior to use. This is done, by making one stop from 25 mph on dry pavement or concrete using light to moderate force on the parking brake lever.

1. Reassemble the rear park brake shoes.
2. Adjust the rear brake shoes.
3. Install the disc brake rotor.
4. Install the disc brake caliper.
5. Install the tire and wheel assembly.
6. Lower the vehicle.